#53191 is essentially an extension of it. ", Use of Stein's maximal principle in Bourgain's paper on Besicovitch sets. If it isn't this might be a bug or there might be a different way to move forward. suggests wrapping enums this way. I don't know about the specific use-case, but in general a fail-safe way to force a line break in C++ code is to add an empty line comment on the preceding line. Powered by Discourse, best viewed with JavaScript enabled. Ok, but this behavior is still intended. Is there a reason beyond protection from potential corruption to restrict a minister's ability to personally relieve and appoint civil servants? Do you have any other remarks/concerns apart from that? int param3, Reddit and its partners use cookies and similar technologies to provide you with a better experience. Asking for help, clarification, or responding to other answers. But everytime formatting the cpp file, it becomes one-line like the first code. Find centralized, trusted content and collaborate around the technologies you use most. Ive run into this exact issue and added a feature request at: I would like to have the option in clang-format to always show one parameter per line for a function declaration. functions, the format is specified by supplying the clang::format::FormatStyle structure. For example, int add(int a, int b, int c) { return a + b + c; } I have tried every related option on Clang-Format Style Options Clang 16.0.0git documentation Emphasis: The key point is "parameter ALWAYS one per line", even if they are short enough to be fit in one line! In general there's a high bar for adding new style options to clang-format: The style guide I'm following (the Linux kernel style) wants AfterEnum: false. As for as I known, Clion has this option Wrap always in Function declaration parameters. 1 Is there any options of clang format enforcing one parameter per line even if the statement does NOT overflow? How can I get clang-format to format this code, How to clang-format struct initializer list, Scan this QR code to download the app now. Here are a couple ideas: Disable formatting entirely around your code, by putting // clang-format off before the code and // clang-format on after your code. running: I believe example is not following the style of BraceWrapping.AfterEnum by virtue of the trailing , I think I'd expect the correct behaviour to be, gets messed up completely by the , and that IS a bug in my view. Always force the enumerator to be on a new I definitely think more control over preserving line breaks would be useful. You may be interested in D60605, which is a related idea (adding incremental format-and-indent-on-type to clangd). "I don't like it when it is rainy." To subscribe to this RSS feed, copy and paste this URL into your RSS reader. https://clang.llvm.org/docs/ClangFormatStyleOptions.html#adding-additional-style-options. This is close but will not work for the case when more than two lines are packed together. I can look how I can make it for only one line. For example, I have my ColumnLimit set to 120, and here's what happens when I reformat some sample code. If I break a line manually, I don't want clang-format changes it to one-line and the first number should align with the first number of previous line. But since the patch is never to be submitted I don't see a reason to improve it. void myFunction(int param1, Ok, if there's a possible way to go forward I will find time to provide a better test which behaves differently depending on this check. Reddit, Inc. 2023. The comma operator is used to group several expressions together. enums if IndentWidth is 8): This doesn't seem to be intentional, as I can't find any style guide that int param6, Without understanding this in more detail I do not know how to move forward with this. (I'm not sure a separate command-line-tool is justified, though). New approach - title and summary are updated. Prevent clang-format from breaking a line at -> operator, clang-format closing bracket on a new line, How do I get one statement of C++ in one line always? Do you know the better way to accomplish my aim than adding an option to libFormat? Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Cookie Notice If you haven't run into these yet, here are some fun issues I ran into: Having a separate tool is nice because it allows the client to make it plugable. I'm using the linux kernel .clang-format as a reference, but this part is bothering me. I don't know how to force that behavior only for the given line (for that I need someone who can help) but in our usecase we should not care if we apply the rule to the whole file or only to the current line since we are only interested in one single Replacement which we can anyways filter afterwards. For example, for: Privacy Policy. line for a function declaration. At present, when BinPackParameters is false and the function declaration exceeds the current ColumnLimit, this occurs. Is this not what you want? int param4, In fact,I want to use this in eigen like this: @Eljay But the first number would not align when I type Enter. int param2, Is linked content still subject to the CC-BY-SA license? Why doesnt SpaceX sell Raptor engines commercially? I can't avoid adding extra formatting options because my first attempt to introduce an ordinary clang-format option faced resistance because of not fitting the clang-format purpose to format files. To generate .clang-format from style llvm, run the following command in the terminal. $ echo "enum { RED, GREEN, BLUE };" | clang-format -style="{BasedOnStyle: llvm, ColumnLimit: 15, IndentWidth: 8}", $ echo "enum { RED, GREEN, BLUE };" | ./bin/clang-format -style="{BasedOnStyle: llvm, ColumnLimit: 15, IndentWidth: 8}", $ ninja FormatTests && ./tools/clang/unittests/Format/FormatTests. It's easy to remove that "ide" part from this patch and just add an option for clang-format instead. Can I configure this in visual studio or clang format? The subreddit for the C programming language. VS "I don't like it raining. int param6, Standalone Tool clang-formatis located in clang/tools/clang-formatand can be used to format C/C++/Java/JavaScript/JSON/Objective-C/Protobuf/C# code. For example, for: All rights reserved. Doesn't it? Sorry. If so, in what way? 1. We could further modify the .clang-format file using our preferences. So it requires to put the empty comment on the each line ending which is not too nice (if i'm not missing something). int param7) What maths knowledge is required for a lab-based (molecular and cell biology) PhD? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. ``` Let's start with the option which keeps all existing line breaks when the flag is set. It's unclear why "extraformattingoptions" is needed, rather than just the usual formatting options, or some other parameter. Is there any options of clang format enforcing one parameter per line even if the statement does NOT overflow? How to configure .clang-format file to achieve this? ``` How can I get this committed? Below is my modified format file. I'm also fine to have a new option in clang-format itself. I think clang-format just doesn't have configurable rules for compound literals, and the defaults are pretty crap, as you see. However, the flag as is does not make sense to me without more information. ClangFormat ClangFormatdescribes a set of tools that are built on top of LibFormat. You are setting clang-format to a format where it is breaking after binary operators and then added a break before a binary operator. Clang format: force parameters to one-line-each even if the statement does NOT overflow, Clang-Format Style Options Clang 16.0.0git documentation, clang-format feature request: Ability to break declaration parameters based on number of parameters. To learn more, see our tips on writing great answers. Lilipond: unhappy with horizontal chord spacing. Is there liablility if Alice scares Bob and Bob damages something? 'unclear why "extraformattingoptions" is needed' - the idea behind is that we can add more ide-specific options later without introducing new reformat parameters. Configuring Style in Code When using clang::format::reformat (.) Does the policy change for AI-generated content affect users who (want to) Why does bunched up aluminum foil become so extremely hard to compress? Did you try to run the program? I second Sam's concerns about introducing a new tool. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. functions from code, one can either use one of the predefined styles (LLVM, Google, Chromium, Mozilla, WebKit, Microsoft) or create a custom style by configuring specific style options. How to configure .clang-format file to achieve this? The next steps could be for example - adding dummy text to empty lines to indent them or applying format only for the code before the cursor (for incomplete code). 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. Could entrained air be used to increase rocket efficiency, like a bypass fan? Thanks for contributing an answer to Stack Overflow! I think your comments on that thread apply much more to this issue than that one, which is concerned not just with adding breaks between parameters/arguments, but additionally adding a break within a parameter, between its type and its name (assuming it has a name). (formatting/clang-format), Clang-Format: Open brace on newline after multiline statement, Stop clang-format from splitting elements onto multiple lines in VS Code. If ColumnLimit is 80, clang-format will convert it to: 'to preserve *all* line breaks, isn't it just one' - it's just much easier code wise, you don't need to take the current position into account. How to get clang-format to not join multiline calls into one line? As far as I see how it works column limit does not prevent the shrinking behavior. clang-format supports two ways to provide custom style options: directly specify style configuration in the -style= command line option or use -style=file and put style configuration in the .clang-format or _clang-format file in the project directory. Configuring Style with clang-format What you are describing should already be the behavior with ColumnLimit=0 and I think your test should pass without the new option. ``` In order to use clang-format for formatting/indenting code in IDE we need to add some tricks which are never needed for clang-format itself. How to determine whether symbols are meaningful. This option is available with extra parameter for reformat () function. int param2, Thanks for the feedback! I don't have commit access. Value type is specified for each option. For more information, please see our 1 $ clang-format -style=llvm -dump-config > .clang-format: Other candidate styles include google, chromium, mozilla, webkit, microsoft. If ColumnLimit is 80, clang-format will convert it to: incremental formatting sometimes wants to make edits both immediately before and after the cursor. Also my current patch is a bit bigger than this version. Why shouldnt I be a skeptic about the Necessitation Rule for alethic modal logics? However, I think this is separate from my issue. There are much more tricks which could also be considered later. Should I trust my own thoughts when studying philosophy? How is introducing a new tool different from adding a new formatting option to clang-format? @ilya-biryukov @463035818_is_not_a_number. Ok, this might mean that my test is bad and does not test what I want (there are more cases which are not formatted the way I want with ColumnLimit: 0). int param3, What this patch is describing is what should already be the case with ColumnLimit set to zero. clang-format currently puts the first enumerator on the same line as the rev2023.6.2.43474. . clang-format assumes that this is not intended and that you will want this cleaned up. Sorry for unrelated formatting changes - that's clang-format's work :). For example, I have tried every related option on Clang-Format Style Options Clang 16.0.0git documentation. @sammccall Making statements based on opinion; back them up with references or personal experience. I believe that this behavior is right and we should not work around it with an additional flag. How can I divide the contour in three parts with the same arclength? It would be nice to avoid a new library entry point (overload) if possible. If it is inconclusive, e.g. For example making a dependent library which serves a little different purpose than libFormat itself or something simpler? Confirmed test failed without change and passed with change by Having the option to make this happen when you have more than X parameters (regardless of line length) would be a great step forward. The tests are improved - now they actually act differently with and without the introduced flag. A cursory search suggests that people treat this trailing comma behavior as a feature (https://stackoverflow.com/questions/23072223/clang-format-style-options-for-enums). Consider the following example which doesn't have a trailing comma and doesn't fit on one line: The current code formats this very strangely: I understand now what you are trying to achieve, could you capture something more like that in your tests too.. (just so we don't break this change later), Update summary and test case to better reflect the issue. D60605: [clangd] Revamp textDocument/onTypeFormatting. (where the user pressed enter). Colour composition of Bromine during diffusion? Hopefully someone will address this soon. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. This option is available with extra parameter for reformat() function. I think the cleanest approach is probably some combination: in particular a "preserve line break at point" primitive does seem useful, and even if source code transforms are used, putting a nice API on this in clang-format would be nice. Why are mountain bike tires rated for so much lower pressure than road bikes? It can support your workflow in a variety of ways including a standalone tool and editor integrations. Aside from humanoid, what other body builds would be viable for an (intelligence wise) human-like sentient species? But everytime formatting the cpp file, it becomes one-line like the first code. When using clang-format command line utility or clang::format::reformat (.) enum { EOF, VOID, CHAR, SHORT, INT, LONG, SIGNED, UNSIGNED, BOOL, FLOAT, DOUBLE, COMPLEX, CONST, RESTRICT, VOLATILE, ATOMIC, STRUCT, UNION, ENUM, LPAREN, RPAREN, LBRACKET, RBRACKET, ASTERISK, DOT, NUMBER, IDENTIFIER }; $ clang-format -style="{BasedOnStyle: llvm, IndentWidth: 8}" enum.cpp, $ ./bin/clang-format -style="{BasedOnStyle: llvm, IndentWidth: 8}" enum.cpp, clang/lib/Format/ContinuationIndenter.cpp, rG072ae7c1e64f: [clang-format] Always break line after enum opening brace, https://stackoverflow.com/questions/23072223/clang-format-style-options-for-enums, clang-format: Add AlignConsecutiveShortCaseStatements, [clang-format] Add a new clang-format option AlwaysBreakBeforeFunctionParameters, [clang-format] Respect ColumnLimit 0 lines breaks in inline asm, [clang-format] AllowShortCompoundRequirementOnASingleLine, [clang-format] Treat AttributeMacros more like attribute macros, rG072ae7c1e64f8dd1b5e9db17838c93b150f8b487. `void myFunction(int param1, int param2, int param3, int param4, int param5, int param6, int param7)` clang-format sometimes changes options quite significantly and it can be nice if you have a choice which version to pick, otherwise it might be unable to read the configuration you have. Not exactly what you want, but you can put an empty comment (//) after the opening curly bracket to force a line break there Reply as far as command-line interface goes, this definitely feels more like a flag than a new tool. clang-format currently puts the first enumerator on the same line as the enum keyword and opening brace if it fits (for example, for anonymous enums if IndentWidth is 8): $ echo "enum { RED, GREEN, BLUE };" | clang-format -style=" {BasedOnStyle: llvm, ColumnLimit: 15, IndentWidth: 8}" enum { RED, GREEN, BLUE }; At present, when BinPackParameters is false and the function declaration exceeds the current ColumnLimit, this occurs. How to prevent clang-format from adding a single semicolon to a new line? Having the option to make this happen when you have more than X parameters (regardless of line length) would be a great step forward. Thank you! void myFunction(int param1, In order to use clang-format for formatting/indenting code in IDE we need to add some tricks which are never needed for clang-format itself. Emphasis: The key point is parameter ALWAYS one per line, even if they are short enough to be fit in one line! I don't really care how it's used from the tool side. enum keyword and opening brace if it fits (for example, for anonymous Configurable Format Style Options This section lists the supported style options. Sometimes it is sufficient to force a line break where you want it. Clang-format: How to avoid new line breaks, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. clang-format bails out when brackets aren't sufficiently matched, incremental formatting needs to work in such cases. line, which gets us the desired result: New test added. Remove hot-spots from picture without touching edges. #DisableFormat: false # If true, clang-format detects whether function calls and definitions are formatted with one parameter per line. If I break a line manually, I don't want clang-format changes it to one-line and the first number should align with the first number of previous line. int param4, This is inconvenient, but will let you completely manually control the formatting of your code. ``` Actually preserving *blank* lines is an important property. I don't quite understand. What is this object inside my bathtub drain that is causing a blockage? int param5, Also few more cases are covered (see the second added test). That's why this review is here - to ask for opinions. and our Could you list the use-cases that clang-format-ide would cover that clang-format doesn't? Before: If you see, I'm not convinced you need/want to preserve *all* line breaks, isn't it just one? `void myFunction(int param1, int param2, int param3, int param4, int param5, int param6, int param7)` completely on one line, but a decision needs to be made, clang-format analyzes whether there are other bin-packed cases . I will definitely remove a separate tool, it seems nobody sees the need of such thing. $ clang-format -style="{ColumnLimit: 0}" /tmp/test.cc, $ clang-format -style="{ColumnLimit: 0, BreakBeforeBinaryOperators: All}" /tmp/format.cc, $ clang-format -style="{ColumnLimit: 0}" /tmp/format.cc, [clang-format] Introduce the flag which allows not to shrink lines, [clang-format] Create a new tool for IDEs based on clang-format, [clang-format] Add a new extra command line option for ide-specific formatting, clang/lib/Format/ContinuationIndenter.cpp, clang/lib/Format/UnwrappedLineFormatter.h, clang/lib/Format/UnwrappedLineFormatter.cpp, https://clang.llvm.org/docs/ClangFormatStyleOptions.html#adding-additional-style-options. This is exactly what I need! By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. int param5, # Each call can be bin-packed, one-per-line or inconclusive. How to let Clang-format allow custom new line? By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Clang-format line breaks Ask Question Asked 7 years, 6 months ago Modified 7 months ago Viewed 31k times 77 I'm looking for a clang-format setting to prevent the tool from removing line breaks. Connect and share knowledge within a single location that is structured and easy to search. These are opposite extremes in some sense: this patch integrates deeply into clang-format and that patch entirely layers on top of it, by transforming the source code (in hacky ways, in some cases). @djasper int param7) Let's start with the option which keeps all existing line breaks when the flag is set. clang-format is a tool that auto-formats C, C++, and Objective C, much as the venerable indent tool does for C. You can run the tool like this: clang-format -i my/source/file.cpp Copy snippet Executing this command will format my/source/file.cpp according to the default style.
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